Move from mean_err() to just mean().
Move from mean_err() to just mean().

pombredanne/yara,digideskio/yara,tdr130/yara,foreni-packages/yara,hillu/yara,hillu/yara,bmagistro/yara,bmagistro/yara,hillu/yara,Security513/yara,beikezcs/yara,Security513/yara,VirusTotal/yara,smaudet/yara,cblichmann/yara,cblichmann/yara,rednaga/yara,rayyang2000/yara,plusvic/yara,MeteorAdminz/yara,plusvic/yara,beikezcs/yara,pombredanne/yara,tdr130/yara,plusvic/yara,beikezcs/yara,VirusTotal/yara,jpypi/yara,smaudet/yara,frbapolkosnik/yara,VirusTotal/yara,wxsBSD/yara,mgoffin/yara,plusvic/yara,VirusTotal/yara,jpypi/yara,VirusTotal/yara,digideskio/yara,kallanreed/yara,rednaga/yara,hillu/yara,hillu/yara,smaudet/yara,jshufelt/yara,digideskio/yara,tanium/yara,msuvajac/yara,digideskio/yara,plusvic/yara,wxsBSD/yara,neatsun/yara,kallanreed/yara,Security513/yara,mgoffin/yara,rayyang2000/yara,foreni-packages/yara,jshufelt/yara,neatsun/yara,jpypi/yara,mgoffin/yara,wxsBSD/yara,jshufelt/yara,frbapolkosnik/yara,tdr130/yara,cblichmann/yara,rednaga/yara,tanium/yara,msuvajac/yara,cblichmann/yara,bmagistro/yara,MeteorAdminz/yara,frbapolkosnik/yara,rayyang2000/yara,MeteorAdminz/yara,cblichmann/yara,msuvajac/yara,neatsun/yara,wxsBSD/yara,kallanreed/yara,tanium/yara,pombredanne/yara,pombredanne/yara,frbapolkosnik/yara,pombredanne/yara,wxsBSD/yara,jshufelt/yara,smaudet/yara,foreni-packages/yara,mgoffin/yara